AK2515 Audio Spectrum Analyzer Board – VFD VU Meter Display

$155.61 $194.40

AK2515 Audio Spectrum Analyzer Board with VFD Display & VU Meter

Transform your audio setup with the AK2515 Audio Spectrum Analyzer Board — a high-precision, visually stunning VFD (Vacuum Fluorescent Display) module that visualizes your music in real time. Whether you're a DIY audio enthusiast, a home studio builder, or a hi-fi hobbyist, this compact analyzer board delivers accurate frequency visualization, a built-in clock display, and versatile input options in one sleek acrylic-mounted unit.

Key Features

High-Resolution VFD Display: Features a 25×15 resolution Vacuum Fluorescent Display for crisp, accurate visualization of each frequency band across a wide 30Hz–20kHz range.
3.5mm AUX & MIC Input: Supports both wired (3.5mm AUX) and wireless (sensitive MIC pickup) audio connections for maximum flexibility.
Multiple Spectrum Modes: Choose from Normal, Inverse Color, Inversion, Frequency Division, and Amplification Curve modes to suit your preferences.
AGC & Custom Output Curves: Automatic Gain Control and selectable output curves (Actual / Smooth I / Smooth II) provide dynamic, eye-catching visual effects.
Fully Adjustable Display: Control brightness (7 levels), main light beam falling speed, peak holding time, and peak falling speed — all with power-off memory so your settings are saved.
One-Click Noise Filtering: Built-in noise filtering function helps deliver a cleaner, more accurate spectrum display.
Clock Display: Shows year, month, day, hour, minute, and second — doubles as a stylish desk clock when no audio is playing.
Auto Display Mode: Automatically switches between spectrum and clock display depending on audio input — smart and hands-free.
4 Font Types: Customize the look of your clock and data readouts with four selectable font styles.

Specifications

Model: AK2515 (JVFD2515 wide / JVFD2517 narrow, optional)
Material: Acrylic
Dimensions: 175 × 28 × 50 mm (6.89 × 1.10 × 1.97 inches)
Display Type: VFD (Vacuum Fluorescent Display)
Resolution: 25 × 15
Frequency Range: 30Hz – 20kHz
Audio Input: 3.5mm AUX / MIC
Operating Voltage: DC 5V
Brightness Levels: 7
Font Types: 4
Net Weight: 189g (approx. 6.67 oz)
Country of Origin: Made in China

Display & Operating Modes

Auto Mode — spectrum when music plays, clock when idle
Music Spectrum Mode (always on)
Clock Display Mode (always on)
Sound Level Display — Normal, Mirror Mode 1, Mirror Mode 2
Amplification Curve — 5 modes: compress low frequency, enhance high frequency, default (no amplification), slight low compress + high enhance, and full high enhance

What's in the Box

1× AK2515 Audio Spectrum Analyzer Board
1× Power Cable
1× 3.5mm Audio Cable
1× 1:2 3.5mm Splitter Cable
2× Acrylic Sheets
1 Set× Mounting Screws

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Note: Actual color may vary slightly from images due to monitor settings and lighting. Please allow ±1–3mm measurement deviation.

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Frequently Asked Questions

Q: What type of display does the AK2515 audio spectrum analyzer use?

A: The AK2515 uses a VFD (Vacuum Fluorescent Display) with a 25×15 resolution, delivering bright, high-contrast visuals that clearly show each frequency band across a 30Hz–20kHz range — making it ideal for both audio monitoring and decorative display setups.

Q: Can the AK2515 spectrum analyzer board work without a wired audio connection?

A: Yes! In addition to the 3.5mm AUX wired input, the AK2515 features a built-in sensitive MIC pickup, allowing it to pick up and display the audio spectrum of any sound in the environment wirelessly — no cable required.

Q: Does the AK2515 remember my settings after being powered off?

A: Absolutely. The AK2515 features a power-off memory function that saves your preferred brightness level, spectrum mode, display settings, and other adjustments so you don't have to reconfigure them each time you turn it on.

Q: What operating voltage does this spectrum analyzer board require?

A: The AK2515 operates on DC 5V, making it compatible with standard USB power sources such as phone chargers, power banks, and computer USB ports for easy and convenient use.